Lath



Patented pr. 3, 1928.

UNITED STATES SAMUEL K. COWAN, OF NEW YORK, N. Y.,

ASSGNOR TO COWAN LATH BOARD GOM- PANY, 0F NASHVILLE, TENNESSEE, ACORPRATION OF TENNESSEE.

LATH.

Application filed July 18,

This invention relates to an improvement in laths.

This invention saves in the cost or construction, saves buildingmaterials, and the time of the workman, and makes the workmans laborless ditlicult and increases his eliciency. It results in a stronger andmore durable wall structure, effects a saving in plaster, studding, andother material, and can be nailed in place by unskilled labor.

This invention consists of a board of suitable proportions havingstaggered slits or slots extending longitudinally thereof, enlarged onthe inside surface to receive the key formed in the plaster as itisforced through the slits or slots by the plaster-er.

In the accompanying drawings Fig. 1 is a plan view;

Fig. 2 is an enlarged cross sectionalview; and

Figs. 3 and Il show slightly modilied forms in the slot.

A, is the board. This may be made in different lengths, widths andthicknesses, accordingto the Work, thinner for plaster, and slightlythicker for stucco work.V Slots or slits l are cut longitudinally in theboard With spaces between and in staggered arrangement.

Thesel slits or slots, 1, are made wider on the inner surface as shownat 2 in the different figures of the drawing to aiford space for the keythat is formed by the plaster which is applied in the usual way, thusholding .it securely and making a firm, solid and durable plasteredsurface.

By starting the outside slits or slots in from the edges, no skill isrequired in nailingthe boards to the wall or ceiling, as they are placedclose together, or edge to edge.

A lath of this character has openings of uniform width and presents asmoother and more uniform surface upon which to work, effecting in bothinstances a saving in plaster, and creating a more durable Wall becauseof the key formed in the enlarged areas at the back of the slits orslots.

Obviously the shape of the edges of thesev vslots might be variedindefinitely, so long as 1924. Serial No. 726,801.

they are always larger on the inside surface than they are on 'theoutside, thus forming the lock and key forthe plaster.

Lathe of this description can be sawed uniformly and cheaply, thusmaking it altogether practical as a building accessory.

A lath of this form will make serviceable and of value parts of lowergrades of lumber now destroyed in slab-pits at saw-mills because ofdefects not objectionable in the plaster or stucco 'frame or boardcreated; thereby conserving a nninufactured material.

A lath having longitudinal saw slits or slots wider on one side than theolhcr creates a practical wooden frame or board 'for plaster, stucco,and other materials, that retains the advantages in construction of thesingle, separate lath now in general use, yelmakes a saving in the costof construction and building materials, saves the time of the Workmanand makes his labor less diliicult and increases his cliiciency, andi'nalws a stronger and more durable wall structure.

l claim l. An article of the character described made from a boardhaving a plurality of elongated and substantially parallel saw kerfs cutentirely through the board in staggered relation and lengthwise thereofsimulating a plurality of laths in a board, the front side of each sawkerf having the side edges thereof extending approxin'ialely at rightangles to the face of the board, and the back side of each saw kerfbeing wider than the front side. l

2. An article of the character described made from aboard having aplurality of elongated and substantially parallel saw kerfs cutlentirely through the board lengthwise thereof simulating a plurality oflaths in a board, the front side of each saw kerf having the side edgesthereof extending approximatelyY at right-angles to the face of theboard, and the back side of each saw kerf being wider than the frontside.

lin testimony whereof I atliX my signature.

SAMUEL K. COWAN.

